WO2012103760A1 - Procédé de contrôle d'admission basé sur la technologie de transmission/réception multipoint coordonnée et station de base - Google Patents

Procédé de contrôle d'admission basé sur la technologie de transmission/réception multipoint coordonnée et station de base Download PDF

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Publication number
WO2012103760A1
WO2012103760A1 PCT/CN2011/082010 CN2011082010W WO2012103760A1 WO 2012103760 A1 WO2012103760 A1 WO 2012103760A1 CN 2011082010 W CN2011082010 W CN 2011082010W WO 2012103760 A1 WO2012103760 A1 WO 2012103760A1
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WIPO (PCT)
Prior art keywords
comp
cells
cell
measurement
request
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PCT/CN2011/082010
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English (en)
Chinese (zh)
Inventor
王学强
李磊
陈晔
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中兴通讯股份有限公司
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Publication of WO2012103760A1 publication Critical patent/WO2012103760A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/022—Site diversity; Macro-diversity
    • H04B7/024—Co-operative use of antennas of several sites, e.g. in co-ordinated multipoint or co-operative multiple-input multiple-output [MIMO] systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/02—Access restriction performed under specific conditions
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/08—Load balancing or load distribution
    • H04W28/086—Load balancing or load distribution among access entities
    • H04W28/0861—Load balancing or load distribution among access entities between base stations
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/12—Setup of transport tunnels

Definitions

  • the invention relates to a coordinated multi-point transmission/reception technology (CoMP, Coordinated Multi-point transmission/reception) in a wireless communication system, and a long-term evolution upgrade (LTE-A, Long Term Evolution- Advanced) CoMP-based admission control method and base station in the system.
  • CoMP Coordinated Multi-point transmission/reception
  • LTE-A Long Term Evolution- Advanced
  • LTE-A is designated as an important element in its technical framework. It refers to a plurality of geographically separated transmission points cooperatively participating in a user equipment (UE) transmitting and/or receiving data to improve the quality of signals received by edge user equipment.
  • UE user equipment
  • CoMP's transmit and receive technologies can be used to increase the coverage of high-speed data rates, thereby increasing throughput at the edge of the cell or increasing system throughput.
  • the technical problem to be solved by the present invention is to provide a CoMP bearer admission control method and a CoMP-based base station to solve the problem of a bearer admission control scheme that does not have an effective CoMP technology.
  • the present invention provides a CoMP-based admission control method.
  • a user equipment UE
  • the CoMP cell initially accessed by the UE performs the following operations:
  • the resource status report reported by the other CoMP cells in the set includes:
  • the resource status report is reported by the CoMP cell according to a default setting or according to a request of the CoMP cell initially accessed by the UE.
  • the obtaining the measurement report of all the CoMP cells in the set reported by the UE includes: the UE periodically reporting the measurement report according to a default setting or according to a request of the CoMP cell initially accessed by the UE.
  • the measurement report includes a signal quality, a precoding matrix index (PMI), a channel quality indicator (CQI), or a rank indication (RI), where the initial access CoMP cell is based on the CoMP cell and other CoMP cells in the set. Resource status reporting, signal quality, PMI, CQI, or RI are used to rank power.
  • PMI precoding matrix index
  • CQI channel quality indicator
  • RI rank indication
  • the present invention also provides a CoMP cell base station, where the base station includes:
  • a resource status report obtaining module configured to obtain a resource status report reported by another CoMP cell in the set
  • a measurement report obtaining module configured to acquire a measurement report of all CoMP cells in the set reported by the UE initially accessed by the current base station;
  • a CoMP cell screening module configured to perform weighted queuing on all CoMP cells in the set according to resource status reports and measurement reports of all cells in the CoMP set, and filter N CoMP cells according to the weighted queuing result;
  • the bearer admission control module is configured to determine whether the total resources of the selected N cells can meet the service requirements that the UE requests to establish, and if yes, the bearer is accepted and established, otherwise the service access is denied.
  • the resource status report obtained by the resource status report obtaining module is periodically reported by the in-set CoMP cell according to the default setting.
  • the measurement report obtained by the measurement report obtaining module is reported by the UE according to a default setting.
  • the resource status report acquiring module acquires the resource status report, and sends a resource status report request to other CoMP cells in the set and a resource status report periodically sent by other CoMP cells in the set; the measurement report obtaining module acquires the
  • the measurement report includes transmitting a measurement control request to the UE, and receiving a measurement report sent by the UE.
  • the measurement report includes a signal quality, a precoding matrix index (PMI), a channel quality indicator (CQI), or a rank indication (RI), where the initial access CoMP cell is based on the CoMP cell and other CoMP cells in the set. Resource status reporting, signal quality, PMI, CQI, or RI are used to rank power.
  • PMI precoding matrix index
  • CQI channel quality indicator
  • RI rank indication
  • An admission control method based on the multi-point cooperative transmission and reception technology CoMP when the user equipment UE requests an access service, the CoMP cell initially accessed by the UE performs the following operations:
  • All CoMP cells in the set are weighted and queued according to resource status reports and measurement reports of all cells in the set, and N CoMP cells are filtered according to the weighted queuing results;
  • the step of obtaining the resource status report reported by the other CoMP cells in the set includes: the other CoMP cells in the set periodically report the resource status report according to the default setting or according to the request of the CoMP cell initially accessed by the UE.
  • the step of periodically reporting the resource status report by the other CoMP cells in the set according to the request of the CoMP cell initially accessed by the UE includes:
  • the CoMP cell initially accessed by the UE sends a resource measurement request to other cells in the set; the other cells in the set report the current cell resource load according to the time period required in the resource measurement request of the primary cell.
  • the step of obtaining a measurement report of all CoMP cells in the set reported by the UE includes:
  • the UE according to a default setting or according to a request week of a CoMP cell initially accessed by the UE The measurement report is reported.
  • the step of periodically reporting the measurement report by the request of the CoMP cell initially accessed by the UE includes:
  • the CoMP cell initially accessed by the UE sends a measurement control request to the UE, and the UE is required to obtain a measurement report of all cells in the set;
  • the UE reports a measurement report of all cells in the set according to the measurement control request.
  • the measurement report includes a signal quality, a precoding matrix index PMI, a channel quality indicator CQI, or a rank indicator RI.
  • a multi-point coordinated transmission and reception technology CoMP cell base station includes: a resource status report acquisition module, a measurement report acquisition module, a CoMP cell screening module, and a bearer admission control module, where:
  • the resource status report obtaining module is configured to: obtain a resource status report reported by another CoMP cell in the set of the CoMP cell that the UE initially accesses;
  • the measurement report obtaining module is configured to: obtain a measurement report of all CoMP cells in the set reported by the UE;
  • the CoMP cell screening module is configured to: perform weighted queuing on all CoMP cells in the set according to resource status reports and measurement reports of all cells in the set, and filter N CoMP cells according to the weighted queuing result;
  • the bearer admission control module is configured to: determine whether the total resources of the selected N CoMP cells can meet the service requirements that the UE requests to establish, and if yes, accept and establish a bearer; otherwise, the service access is denied.
  • the resource status report is periodically reported by other CoMP cells in the set according to a default setting or according to a request of a CoMP cell initially accessed by the UE;
  • the measurement report is periodically performed by the UE according to a default setting or according to a request of a CoMP cell initially accessed by the UE.
  • the resource status report obtaining module is configured to obtain the resource status report in the following manner:
  • the CoMP cell initially accessed by the UE sends a resource status report request to other CoMP cells in the set;
  • the measurement report obtaining module is configured to acquire the measurement report according to the following manner: the CoMP cell initially accessed by the UE sends a measurement control request to the UE, and the UE is required to obtain a measurement report of all cells in the set; as well as,
  • the UE reports a measurement report of all cells in the set according to the measurement control request.
  • the measurement report includes a signal quality, a precoding matrix index PMI, a channel quality indicator CQI, or a rank indicator RI.
  • the primary CoMP cell may perform weighted queuing and screening on all cells in the CoMP set according to the resource condition reported by the secondary CoMP cell and the measurement report of all cells in the CoMP set reported by the UE, so as to select the total resources of the selected cell according to the filtered To determine whether the UE service access is satisfied.
  • Such judgment and selection can enable the system to establish the bearer on the most suitable cell according to the relevant information measured by the UE, and at the same time, balance the load in each cell at the beginning of establishing the bearer, and realize load balancing.
  • FIG. 1 is a schematic diagram of a CoMP-based admission control method according to an embodiment of the present invention
  • FIG. 2 is a signaling flowchart of establishing a successful reception based on CoMP technology in an LTE-A system according to an embodiment of the present invention
  • FIG. 3 is a flowchart of processing signaling of a UE measurement report timeout according to an embodiment of the present invention
  • FIG. 4 is a flow chart of signaling failure of the total resource in the CoMP set filtered by the embodiment of the present invention. Preferred embodiment of the invention
  • the CoMP technology can be used to simultaneously serve multiple cells for the same UE.
  • the embodiment of the present invention provides a method for determining the load of each cell in the CoMP set. Whether it can accept business, that is, the method of carrying acceptance control.
  • FIG. 1 is a schematic diagram of a CoMP-based admission control method according to an embodiment of the present invention.
  • the CoMP cell initially accessed by the UE also referred to as the primary CoMP cell or the primary cell, performs the following operations:
  • Step 101 Obtain a resource status report reported by another CoMP cell in the set; the in-set CoMP cell may report the resource status report according to a system default setting or periodically according to a request of the primary CoMP cell.
  • the CoMP cell set in the embodiment of the present invention may be statically set in advance or dynamically set according to a specific measurement result.
  • the adjacent cells may be classified as a Comp zone set, or may be divided according to the neighbor set actually measured by the UE.
  • Step 102 Obtain a measurement report of all CoMP cells in the set reported by the UE.
  • the UE may report to the primary CoMP cell according to the system default setting or the request of the primary CoMP cell.
  • the measurement report includes a signal quality, a Precoding Matrix Indicator (PMI), a Channel Quality Indication (CQI), or a Rank Indication (RI).
  • PMI Precoding Matrix Indicator
  • CQI Channel Quality Indication
  • RI Rank Indication
  • Step 103 Perform weighted queuing on all CoMP cells in the set according to resource status reports and measurement reports of all cells in the CoMP set, and filter N CoMP cells according to the weighted queuing result; where the primary CoMP cell is based on the CoMP cell and other in the set Resource status of the CoMP community State reports, signal quality, PMI, CQI, or RI are weighted, such as 40% of the resource state, 30% of the signal quality, and 10% each.
  • the number of the selected CoMP cells is related to the system configuration filtering policy.
  • the screening policy may be based on the system configuration or the subscription information of the UE user, but the N cannot be greater than the maximum number of bearers that the UE can support.
  • the subscription information of the UE is configured on the core network.
  • the core network may notify the primary CoMP cell through E-RAB signaling when the user accesses.
  • Step 104 Determine whether the total resources of the selected N cells can meet the service requirements that the UE requests to establish, and if yes, accept and establish a bearer, otherwise reject the service access.
  • the method of the embodiment of the present invention can be applied to a UE located at a cell center, and can also be applied to a UE at a cell edge, and when the UE is located at a cell edge, the admission control effect is more obvious.
  • the UE initiates an access request, it carries relevant information so that it can be displayed whether it is at the cell edge.
  • the primary CoMP cell sends a periodic resource measurement control to the secondary CoMP cell, and the secondary CoMP cell periodically reports the resource measurement report according to the periodic time in the measurement control.
  • the eNodeB sends the information about the CoMP set to the UE. Measurement control (signal quality, PMI, RI, CQI, etc.) of all cells, after the UE reports the measurement report.
  • the eNodeB performs weighted queuing (resource, signal quality, PMI, RI, CQI, etc.) on all cells in the CoMP set, and filters the eligible TOP (n) cells according to the maximum number of bearers (n) that the UE can accept. At this time, it is determined whether the sum of the resources of the selected cells meets the resources for establishing a service, and if the service is accepted and the bearer is established on all the cells, the service access is rejected.
  • CoMP-based admission control enables users at the cell edge to use network resources through CoMP technology, and each cell in the CoMP set achieves load balancing.
  • Step 201 The primary cell sends a resource measurement request to other cells in the CoMP set.
  • the measurement request is sent only once, and the cell reporting resource status information, reporting period, and the like are carried.
  • Step 202 The other cells in the CoMP set report the current cell resource load status according to the time period required in the resource measurement request of the primary cell.
  • Step 203 The core network sends an evolved radio access bearer (E-RAB, EVOLVED) to the primary cell.
  • E-RAB evolved radio access bearer
  • Step 204 The primary cell sends a measurement control request to the UE, and requests the UE to measure signal quality, PMI, CQI, and RI of all cells in the current CoMP set.
  • Step 205 The UE reports the signal quality, PMI, RI, CQI, etc. of the measured cell in the CoMP set according to the measurement control request.
  • Step 206 Perform weighting processing according to related information of cells in the CoMP set reported by the UE, and queue all uncongested cells.
  • Step 207 Filter the weighted cells according to the maximum number of bearers that the UE can receive, and select a corresponding TOP cell.
  • Step 208 Determine whether the service access is satisfied according to the sum of the existing resources of the selected TOP cell.
  • Step 209 The total cell resource sum of the TOP satisfies the user access, and the primary cell sends an E-RAB admission success response to the core network.
  • the UE when the UE requests access to one or more services, the UE measures the processing flow when the UE times out, as shown in FIG. 3, the processing flow includes:
  • Step 301 The primary cell sends a resource measurement request to other cells in the CoMP set.
  • the measurement request is sent only once, and the resource reporting information of the cell is reported, and the reporting period is performed.
  • Step 302 The other cells in the set report the current cell resource load according to the time period required in the resource measurement request of the primary cell.
  • Step 303 The E-RAB admission request sent by the core network to the primary cell.
  • Step 304 The primary cell sends a measurement control request to the UE, and requests the UE to measure signal quality, CQI, PML RI, and the like of all cells in the current CoMP set.
  • Step 305 The UE does not receive the measurement result of the UE within the timeout period configured by the system, and the primary cell sends an E-RAB admission failure response to the core network.
  • the admission control process when the remaining small cells in the CoMp set are insufficient is filtered, as shown in FIG. 4:
  • Step 401 The primary cell sends a resource measurement request to other cells in the CoMP set.
  • Step 402 The other cells in the set report the current cell resource load according to the time period required in the resource measurement request of the primary cell.
  • Step 403 The E-RAB admission request sent by the core network to the primary cell.
  • Step 404 The primary cell sends a measurement control request to the UE, requesting the UE to measure the signal quality, CQI, PML RI, etc. of all cells in the current CoMP set;
  • Step 405 The UE reports the measured signal quality, PML RI, CQI, and the like of the CoMP set cell according to the measurement control request.
  • Step 406 Perform weighting processing according to related information of cells in the CoMP set reported by the UE, and queue all uncongested cells.
  • Step 407 Filter the weighted cells according to the maximum number of bearers that the UE can receive, and select a corresponding TOP cell.
  • Step 408 Determine whether the service access is satisfied according to the sum of the existing resources of the selected TOP cell.
  • Step 409 The sum of all the cell resources of the TOP does not satisfy the user access, and the primary cell sends an E-RAB admission failure response to the core network.
  • an embodiment of the present invention further provides a CoMP cell base station, where the base station
  • the method includes: a resource status report obtaining module, a measurement report obtaining module, a CoMP cell screening module, and a bearer admission control module, where:
  • the resource status report obtaining module is configured to: obtain a resource status report reported by other CoMP cells in the set;
  • the measurement report obtaining module is configured to: obtain a measurement report of all CoMP cells in the set reported by the UE initially accessed by the current base station;
  • the CoMP cell screening module is configured to: perform weighted queuing on all CoMP cells in the set according to resource status reports and measurement reports of all cells in the CoMP set, and filter N CoMP cells according to the weighted queuing result;
  • the bearer admission control module is configured to: determine whether the total resources of the selected N cells can meet the service requirements that the UE requests to establish, and if yes, accept and establish a bearer, otherwise reject the service access.
  • the resource status report obtained by the resource status report obtaining module is periodically reported by the in-set CoMP cell according to the default setting.
  • the measurement report obtained by the measurement report obtaining module is reported by the UE according to the default setting.
  • the resource status report acquiring module acquires the resource status report, and sends a resource status report request to other CoMP cells in the set and a resource status report periodically sent by other CoMP cells in the set; the measurement report obtaining module acquires the The measurement report includes transmitting a measurement control request to the UE, and receiving a measurement report sent by the UE.
  • the measurement report includes a signal quality, a PMI, a CQI, or an RI
  • the initial access CoMP cell performs weighted ordering according to a resource status report, a signal quality, a PML CQI, or an RI of the CoMP cell and other CoMP cells in the set.
  • the base station mentioned above includes an evolved Node B (ENB, eNodeB) in the LTE-A system.
  • the primary CoMP cell may perform weighted queuing and screening on all cells in the CoMP set according to the resource condition periodically reported by the secondary CoMP cell and the signal quality, PMI, RI, and CQI of all cells in the CoMP set reported by the UE. . Therefore, it is determined whether the UE service access is satisfied according to the total resources of the filtered cell. Such judgment and selection can enable the system to establish the bearer on the most suitable cell according to the related information measured by the UE, and at the same time, balance the load in each cell at the beginning of establishing the bearer, and achieve load balancing.
  • the primary CoMP cell may perform weighted queuing and screening on all cells in the CoMP set according to the resource condition reported by the secondary CoMP cell and the measurement report of all cells in the CoMP set reported by the UE, so as to select the total resources of the selected cell according to the filtered To determine whether the UE service access is satisfied.
  • Such judgment and selection can enable the system to establish the bearer on the most suitable cell according to the relevant information measured by the UE, and at the same time, balance the load in each cell at the beginning of establishing the bearer, and realize load balancing. Therefore, the present invention has strong industrial applicability.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Computer Security & Cryptography (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

La présente invention concerne un procédé de contrôle d'admission basé sur la technologie de transmission/réception multipoint coordonnée et station de base de cellule CoMP. Le procédé comprend les étapes suivantes: lors d'une demande d'accès à un service par un équipement utilisateur, la réalisation des opérations suivantes par une cellule CoMP initialement accédée par l'équipement utilisateur: l'acquisition de rapports de statut de ressources notifiés par d'autres cellules CoMP dans un ensemble où réside la cellule CoMP initialement accédée par l'équipement utilisateur; l'acquisition de rapports de mesure de toutes les cellules CoMP dans l'ensemble et notifiés par l'équipement utilisateur; la mise en file d'attente pondérée de toutes les cellules CoMP dans l'ensemble en fonction des rapports de statut de ressources et des rapports de mesure de toutes les cellules dans l'ensemble, et l'élimination par filtrage de N cellules CoMP en fonction du résultat de la mise en file d'attente pondérée; et la détermination de la capacité ou non de la totalité de ressources de satisfaire les demandes d'un service dont l'établissement est demandé par l'équipement utilisateur, et dans l'affirmative, l'admission de l'accès et l'établissement d'un porteur; au cas contraire, le refus d'accès au service. La solution technique selon l'invention permet au système d'établir le porteur sur la cellule la plus appropriée selon l'information pertinente mesurée par l'équipement utilisateur, et dans le même temps, d'équilibrer la charge parmi les cellules au début de l'établissement du porteur de manière à réaliser un équilibrage de charge.
PCT/CN2011/082010 2011-02-01 2011-11-10 Procédé de contrôle d'admission basé sur la technologie de transmission/réception multipoint coordonnée et station de base WO2012103760A1 (fr)

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CN201110034389.8 2011-02-01
CN2011100343898A CN102625357A (zh) 2011-02-01 2011-02-01 基于CoMP的接纳控制方法和基站

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EP3668187B1 (fr) 2013-12-06 2023-10-04 Huawei Technologies Co., Ltd. Accéder à un point d'accès par un dispositif de station
CN104602298B (zh) * 2015-01-30 2018-01-26 中国联合网络通信集团有限公司 一种空口拥塞控制的方法和基站
CN107046703B (zh) * 2016-02-05 2021-01-29 华为技术有限公司 接入控制方法和基站
CN110933760A (zh) * 2019-11-28 2020-03-27 北京明略软件***有限公司 承载接纳控制方法、装置及基站设备

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